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Status of Trout-free Waters in the Tasmanian Wilderness World Heritage Area [Report to Department of Primary Industries, and Water, Hobart]

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Davies, PE and Cook, LSJ and Sloane, T and Robinson, WR (2009) Status of Trout-free Waters in the Tasmanian Wilderness World Heritage Area [Report to Department of Primary Industries, and Water, Hobart]. Project Report. Freshwater Systems, Hobart.

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Abstract

A project was conducted to assess the status of trout-free waters in the Tasmanian Wilderness World Heritage Area (TWWHA) by:
- developing a standard monitoring protocol, using existing trout survey data, with a high level of confidence of detecting trout;
- undertaking a survey of trout in priority sites using the standard monitoring protocol;
- establishing a benchmark set of data on the abundance and distribution of trout at surveyed sites, as a basis for future monitoring of trends;
- gathering and mapping existing information on trout-free waters, including survey results;
- assessing the current status of trout-free waters of the TWWHA with regard to presence/absence and risk of infestation of trout;
- making recommendations for future monitoring.

A brief overview of the history of introduction, impacts of brown trout on native aquatic biota and trout life history is followed by an overview of existing sources of distributional information, as well as a discussion on the value of trout-free waters.
A review and update of fish distribution database and mapping resources was undertaken, with input from a variety of sources. A detailed description of the trout-free status of all key areas within the TWWWH is provided. The status of trout-free waters across the TWWHA is presented in map form and discussed in detail, focussing on key areas known to be trout-free, based on a variety of information sources centred on the CFEV exotic fish map. New records of trout presence in waters previously attributed as trout-free are presented

Item Type: Report (Project Report)
Publisher: Freshwater Systems
Additional Information:

© DPIPWE 2009, © Freshwater Systems 2009

Date Deposited: 12 Sep 2014 05:18
Last Modified: 18 Nov 2014 05:05
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